SnorkelForecast.com

Catalina Island Snorkel Report Today

USA · Updated Tue 04:14 (EDT) · Source: Snapshot · Showing fallback/stale data

The skinny

Go in the best window Report Thu 00:00

Catalina Island has a usable snorkeling window around Thu 09:00. The main thing to watch is waves.

Score: 6.2/10

Best time: Thu 09:00

Main risk: Waves

Best morning signal: Thu 11:00 (Good).

Best afternoon signal: Thu 12:00 (Fair). Peak afternoon wind is about 5.6 m/s.

Email me when it is good

Sunrise

09:00

Sunset

22:59

Water

20.8°C

Max air

19.1°C

Sky

Clear

0% cloud

Good window is available today

Next safe window: Thu 13:00–15:00 (13% of next 72h are suitable)

3-day planner Best available Show data

3-day planner

Thursday

✅ good conditions

Main blocker: Waves

Best available hours

Next safe window starts at Thu 13:00 until 15:00.

Why this verdict

Main blockers across the next 72 hours:

  • Waves (23 hours)
  • Darkness (12 hours)
  • Wind (7 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 20/100

Low drift risk now.

water is warm enough for occasional jellyfish; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Thu 14:00

Nearby alternatives in USA

La Jolla Cove

122 km away

❌ Poor

Crystal River

3429 km away

✅ Good

Dry Tortugas

3572 km away

❌ Poor

Looe Key

3711 km away

❌ Poor

Advanced forecast data

Viewing historical data

Tue 04:00 – Fri 04:00 (EDT)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.0 around Tue 00:00; 0 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 0.86m to 0.92m).

Wind is at or below 5.4m/s in 5/24 sampled hours (range 4.3 to 16.3m/s).

Tides range from -0.26m to 0.89m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Tue 04:00 0.92 · high 11.50 · high 20.20 · out of range poor
Tue 05:00 0.90 · high 9.00 · high 20.10 · out of range poor
Tue 06:00 0.90 · high 7.50 · high 20.10 · out of range poor
Tue 07:00 0.90 · high 7.90 · high 20.00 · out of range poor
Tue 08:00 0.88 · high 6.00 · high 20.00 · out of range poor
Tue 09:00 0.88 · high 5.80 · high 20.00 · out of range poor
Tue 10:00 0.88 · high 5.00 · good 19.90 · out of range poor
Tue 11:00 0.86 · high 4.30 · good 19.90 · out of range poor
Tue 12:00 0.86 · high 4.70 · good 19.90 · out of range poor
Tue 13:00 0.86 · high 5.80 · high 19.90 · out of range poor
Tue 14:00 0.86 · high 6.90 · high 20.00 · out of range poor
Tue 15:00 0.86 · high 6.80 · high 20.00 · out of range poor
Tue 16:00 0.86 · high 6.10 · high 20.10 · out of range poor
Tue 17:00 0.86 · high 5.20 · good 20.10 · out of range poor
Tue 18:00 0.86 · high 4.70 · good 20.20 · out of range poor
Tue 19:00 0.86 · high 6.30 · high 20.20 · out of range poor
Tue 20:00 0.88 · high 9.60 · high 20.30 · out of range poor
Tue 21:00 0.88 · high 11.00 · high 20.40 · out of range poor
Tue 22:00 0.88 · high 11.90 · high 20.50 · out of range poor
Tue 23:00 0.90 · high 12.10 · high 20.50 · out of range poor
Wed 00:00 0.90 · high 13.80 · high 20.60 · good poor
Wed 01:00 0.90 · high 16.20 · high 20.60 · good poor
Wed 02:00 0.92 · high 16.30 · high 20.50 · out of range poor
Wed 03:00 0.92 · high 14.60 · high 20.50 · out of range poor
Wed 04:00 0.92 · high 13.20 · high 20.40 · out of range poor
Wed 05:00 0.90 · high 13.40 · high 20.30 · out of range poor
Wed 06:00 0.90 · high 12.70 · high 20.30 · out of range poor
Wed 07:00 0.90 · high 12.40 · high 20.20 · out of range poor
Wed 08:00 0.90 · high 11.70 · high 20.20 · out of range poor
Wed 09:00 0.90 · high 12.00 · high 20.10 · out of range poor
Wed 10:00 0.90 · high 12.10 · high 20.10 · out of range poor
Wed 11:00 0.88 · high 12.80 · high 20.00 · out of range poor
Wed 12:00 0.88 · high 13.40 · high 20.00 · out of range poor
Wed 13:00 0.88 · high 10.50 · high 20.00 · out of range poor
Wed 14:00 0.84 · high 3.40 · good 20.00 · out of range poor
Wed 15:00 0.84 · high 3.10 · good 20.00 · out of range poor
Wed 16:00 0.84 · high 3.60 · good 20.10 · out of range poor
Wed 17:00 0.86 · high 4.70 · good 20.10 · out of range poor
Wed 18:00 0.86 · high 7.60 · high 20.20 · out of range poor
Wed 19:00 0.88 · high 10.60 · high 20.20 · out of range poor
Wed 20:00 0.88 · high 14.70 · high 20.30 · out of range poor
Wed 21:00 0.90 · high 18.20 · high 20.40 · out of range poor
Wed 22:00 0.92 · high 19.30 · high 20.40 · out of range poor
Wed 23:00 0.92 · high 18.70 · high 20.50 · out of range poor
Thu 00:00 0.94 · high 19.40 · high 20.50 · out of range poor
Thu 01:00 0.94 · high 19.20 · high 20.50 · out of range poor
Thu 02:00 0.94 · high 19.10 · high 20.40 · out of range poor
Thu 03:00 0.94 · high 18.20 · high 20.40 · out of range poor
Thu 04:00 0.94 · high 17.20 · high 20.30 · out of range poor
Thu 05:00 0.94 · high 16.90 · high 20.30 · out of range poor
Thu 06:00 0.94 · high 15.10 · high 20.20 · out of range poor
Thu 07:00 0.94 · high 13.70 · high 20.20 · out of range poor
Thu 08:00 0.94 · high 13.30 · high 20.10 · out of range poor
Thu 09:00 0.94 · high 10.10 · high 20.10 · out of range poor
Thu 10:00 0.94 · high 7.90 · high 20.10 · out of range poor
Thu 11:00 0.92 · high 7.90 · high 20.00 · out of range poor
Thu 12:00 0.92 · high 8.00 · high 20.00 · out of range poor
Thu 13:00 0.92 · high 7.60 · high 20.00 · out of range poor
Thu 14:00 0.90 · high 5.80 · high 20.10 · out of range poor
Thu 15:00 0.90 · high 3.50 · good 20.10 · out of range poor
Thu 16:00 0.88 · high 4.40 · good 20.20 · out of range poor
Thu 17:00 0.88 · high 6.50 · high 20.20 · out of range poor
Thu 18:00 0.86 · high 7.60 · high 20.30 · out of range poor
Thu 19:00 0.86 · high 10.80 · high 20.30 · out of range poor
Thu 20:00 0.86 · high 15.50 · high 20.40 · out of range poor
Thu 21:00 0.86 · high 18.40 · high 20.50 · out of range poor
Thu 22:00 0.86 · high 21.00 · high 20.60 · good poor
Thu 23:00 0.88 · high 20.90 · high 20.70 · good poor
Fri 00:00 0.88 · high 20.50 · high 20.70 · good poor
Fri 01:00 0.88 · high 21.00 · high 20.70 · good poor
Fri 02:00 0.88 · high 19.10 · high 20.60 · good poor
Fri 03:00 0.88 · high 17.70 · high 20.50 · out of range poor